Is this possible with jQuery? Notifying user of a new theme update in template
So I'm making a style for a forum software platform. What I would like to do is add a script to the theme that when I release it and people download it and install it on their forum I can track the active installs and also notify the admin by showing a content block that is only visible to admin with an IF statement notifying to upgrade to the latest version of the theme.
Kinda like Wordpress does with its themes.
So I need some sort of version check plugin that can work with SQL or something or a service online that provides this?
In short something like Google Analytics that I can add in the source of my template and it monitors the theme if installed and used and notifies the admin if a newer version is available.
My gut is telling me it might be possible but if not its gonna be through PHP right? Sadly I have no exp with that lanauge or SQL syntax.
I really just need the most effective solution here. It doesn't need to have an SQL backend.